CN106379131A - Vehicle suspension and vehicle - Google Patents
Vehicle suspension and vehicle Download PDFInfo
- Publication number
- CN106379131A CN106379131A CN201610940130.2A CN201610940130A CN106379131A CN 106379131 A CN106379131 A CN 106379131A CN 201610940130 A CN201610940130 A CN 201610940130A CN 106379131 A CN106379131 A CN 106379131A
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- China
- Prior art keywords
- accumulator
- valve
- oil cylinder
- electromagnetic valve
- vehicle
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/06—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
- B60G21/073—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/0416—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics regulated by varying the resiliency of hydropneumatic suspensions
- B60G17/0432—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics regulated by varying the resiliency of hydropneumatic suspensions by varying the number of accumulators connected to the hydraulic cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
Abstract
The invention relates to a vehicle suspension and a vehicle. The suspension comprises an oil cylinder, a power unit and at least three accumulators, wherein a rod chamber of the oil cylinder is communicated with the first accumulator and the power unit respectively, and a rodless chamber of the oil cylinder is communicated with the second accumulator and the power unit respectively. The vehicle comprises the suspension which is arranged at the bottom of a vehicle body. The suspension and the vehicle have the beneficial effects that real-time and step adjustment of rigidity is achieved and the side-tipping and rollover resistance of the vehicle is improved, thus greatly improving the comfort, safety and handling stability of the vehicle; and the volume of the total air chamber of the accumulator connected with the rodless chamber of the oil cylinder is increased, thus reducing the rigidity of the suspension, so that the suspension is more flexible and then the vehicle runs more stably and comfortably.
Description
Technical field
The present invention relates to vehicle arrangement technical field, more particularly, to a kind of vehicle suspension and vehicle.
Background technology
Vehicle suspension system is vehicle Core Feature assembly, for vehicle safety, comfortableness, control stability tool
Continuous improvement, vehicle suspension vibration isolation and inclining property of anti-side significant, that with people, the ride comfort performance of vehicle is required
The attention of people can increasingly be caused, all can not adjust after the completion of traditional passive suspension damping and rigidity Design, and rigidity
Larger, car load ride comfort and control stability can not be taken into account.
Current vehicle hydro pneumatic suspension is mainly interconnection hydro pneumatic suspension and semi-active damper controls suspension, interconnects hydro pneumatic suspension
By the upper and lower oil cylinder of different wheel suspension interconnect improve anti-rolling capability, equiblibrium mass distribution multiple-axle vehicle wheel load, but suspension rate and
Damping can not be adjusted；Semi-active damper controls suspension to be only capable of carrying out damping control, and suspension rate can not continuously adjust, and vehicle is flat
Ways face, cross-country road, zero load, car load ride comfort and driving safety can not be effectively improved under the different operating modes such as fully loaded,
Vehicle emergency turn travels body roll and can not control, and leads to the control stability can not be according to operating mode Automatic adjusument.
Content of the invention
The invention provides a kind of vehicle suspension and vehicle, it is achieved that rigidity is real-time, have level to adjust, improves vehicle anti-side and incline
Turn over performance with anti-side, greatly improve vehicle riding comfort, safety and control stability；Increase and be connected with the rodless cavity of oil cylinder
Accumulator total gas chamber volume, thus reducing the rigidity of suspension so that suspension is softer, vehicle travel more steady, comfortable.
The technical solution adopted in the present invention is：
A kind of vehicle suspension, including oil cylinder, power unit and at least three accumulators；The rod chamber of described oil cylinder respectively with
One described first accumulator connects with described power unit, the rodless cavity of described oil cylinder respectively with the second energy storage remaining described
Device connects with described power unit.Increase total gas chamber volume of the accumulator being connected with the rodless cavity of oil cylinder, thus reducing
So that suspension is softer, vehicle travels more steady, comfortable the rigidity of suspension；The rodless cavity of oil cylinder respectively with remaining second storage
Can device, the quantity of the accumulator being connected with the rodless cavity of oil cylinder can be adjusted, thus change being connected with the rodless cavity of oil cylinder
Total gas chamber volume of accumulator, realizes the purpose of adjustment suspension rate.
Further, the quantity of described accumulator is three, the respectively first accumulator, the second accumulator and the 3rd energy storage
Device；The rod chamber of described oil cylinder is connected with described first accumulator and described power unit respectively by the first valve group；Described oil
The rodless cavity of cylinder is connected with described second accumulator, described 3rd accumulator and described power unit respectively by the second valve group,
And it is provided with the first electromagnetic valve between described second valve group and described 3rd accumulator.When vehicle is during travelling, by the
The quantity of the accumulator that one electromagnetism valve regulation is connected with the rodless cavity of oil cylinder, thus change the storage being connected with the rodless cavity of oil cylinder
Total gas chamber volume of energy device, realizes purpose that is real-time, having level to adjust suspension rate so that vehicle traveling is safer, comfortable, steady
Fixed.
Further, described first valve group includes the first check valve, the second check valve, the second electromagnetic valve, the 3rd electromagnetic valve
And first through hole；The rod chamber of described oil cylinder passes sequentially through described first check valve and described second electromagnetic valve and described first storage
Can device connect, and described first through hole and described second electromagnetic valve parallel connection；Described first accumulator and described power unit all according to
Secondary connected with the rod chamber of described oil cylinder with described second check valve by described 3rd electromagnetic valve.First valve group is used in suspension
Extension stage provides adaptive damping, increases suspension roll stiffness, prevents vehicle roll angle excessive.
Further, described second valve group includes the 3rd check valve, the 4th check valve, the 4th electromagnetic valve, the 5th electromagnetic valve
With the second through hole；The rodless cavity of described oil cylinder passes sequentially through described 3rd check valve and described 4th electromagnetic valve respectively with described
Two accumulators connect with described first electromagnetic valve, and described 4th electromagnetic valve, described 5th electromagnetic valve and described second through hole are simultaneously
Connection, described first electromagnetic valve connects with described 3rd accumulator；Described second accumulator, described first electromagnetic valve and described power
Unit is all connected with the rodless cavity of described oil cylinder by described 4th check valve.Second valve group is used for providing in the suspension compresses stage
It is achieved that 3～4 grades of suspension damping are adjusted, damping ratio is classified regulation between 0.15～0.6 to adaptive damping.
Further, described power unit includes fuel tank, central accumulator, reversal valve, the 6th electromagnetic valve and the 7th electromagnetism
Valve, described fuel tank connect with described central authorities accumulator, and described central accumulator is connected with described reversal valve by oil pump, described changes
Pass sequentially through described 6th electromagnetic valve, described 3rd electromagnetic valve and described second check valve to valve to connect with the rod chamber of described oil cylinder
Logical, described reversal valve is connected with the rodless cavity of described oil cylinder with described 4th check valve by described 7th electromagnetic valve, by control
Reversal valve processed is alternately oil-filled to rod chamber and rodless cavity, reaches desired pressure.
Further, the first overflow valve and the second overflow valve are also included, the rod chamber of described oil cylinder passes through described first and overflows
Stream valve connects with described fuel tank；The rodless cavity of described oil cylinder is connected with described fuel tank by described second overflow valve.
Further, it is provided with barrier film in described accumulator, the outer of described barrier film is connected with the inwall of described accumulator, institute
State barrier film and described accumulator is divided into upper energy storing space and lower energy storing space, the rod chamber of described lower energy storing space and described oil cylinder
Or the rodless cavity connection of described oil cylinder, described lower energy storing space is used for storing liquid, and described upper energy storing space is used for sealing gas,
For adjusting suspension rate, provide prefabricating load.
Further, described barrier film is rubber membrane.
A kind of vehicle, including above-mentioned suspension, described suspension is arranged on the bottom of vehicle body.
Beneficial effects of the present invention：
1st, patent of the present invention adopts at least three accumulators, realize rigidity in real time, have level to adjust, improve vehicle anti-side incline and
Anti-side turns over performance, greatly improves vehicle riding comfort, safety and control stability；Increase and be connected with the rodless cavity of oil cylinder
Total gas chamber volume of accumulator, thus reducing the rigidity of suspension so that suspension is softer, vehicle travels more steady, comfortable；Oil
The rodless cavity of cylinder respectively with remaining the second accumulator, the quantity of the accumulator being connected with the rodless cavity of oil cylinder can be adjusted, from
And change total gas chamber volume of the accumulator being connected with the rodless cavity of oil cylinder, realize the purpose of adjustment suspension rate.
When the 2nd, needing to continuously adjust suspension rate, by reversal valve and connected 6th electromagnetic valve and the 7th electromagnetic valve
Alternately it is filled with hydraulic oil to the rod chamber of oil cylinder and the rodless cavity of oil cylinder, until it reaches the rigidity of setting；And bodywork height is constant,
Need to reduce suspension rate, oil cylinder upper and lower cavity hydraulic oil alternately flows into oil cylinder, and suspension rate is accordingly reduced to setting value；Vehicle carries
During lotus change, suspension rate increases or decreases with car load and forms sliding scale, and therefore vehicle sprung mass natural frequency exists
It is basically unchanged under different loads, vehicle has unanimously good riding comfort in fully loaded or unloaded situation, simultaneously can also handss
Dynamic setting adjusts suspension rate and changes suspension sprung mass natural frequency.Suspension rate can be set by driver it is also possible to
Automatically controlled according to driving cycle, load etc., suspension natural frequency therefore can continuously adjust, meet given travel operating mode need
Ask, improve driving comfort.
3rd, when vehicle exceedes certain speed steering, by closing the first electromagnetic valve, the only the 3rd accumulator work, thus increase
Plus suspension roll stiffness, improve vehicle anti-side and incline and pitching resistance energy；During emergency turn, the 3rd closed electromagnetic valve, outside steering
Wheel rod chamber locking, suspension rate increases further, prevents angle of heel excessive and turns on one's side.
4th, in suspension compresses or extension, pass through the first valve group respectively and the second valve group provides Multi-stage damping power, formed big
Damping, in damping, medium and small damping, 4 grades of little damping basis dampings greatly, every one-level damping passes through suspension controller according to road surface feelings
Condition Automatic adjusument damps size, and rodless cavity valve group will be in parallel to the 4th electromagnetic valve and the 5th electromagnetic valve, open the 4th electromagnetic valve or
5th electromagnetic valve forms a throttle orifice, and compression damping reduces, and the 4th electromagnetic valve and the 5th electromagnetic valve are all opened, and compression damping is
Little, the 4th electromagnetic valve and the 5th electromagnetic valve are all closed, and compression damping is maximum；Compression travel rod chamber fluid passes through the first check valve
Flow freely into the second check valve, it is to avoid when suspension quickly moves, produce cavitation, reduce suspension property, it is to avoid to oil cylinder
Cause pitting corrosion.In level road, suspension automatically adjusts and is in medium and small damping normal vehicle operation, improves riding comfort,
Can also need to be adjusted according to human pilot.
5th, hydraulic oil quickly can be filled with to the rod chamber of oil cylinder and the rodless cavity of oil cylinder using central accumulator, significantly drop
Low energy consumption；Using Algorithm of Active Control, under different driving cycles and car load, vehicle has optimal ride comfort and manipulation
Stability, and by being filled with or discharging hydraulic oil to oil cylinder rodless cavity, bodywork height can continuously adjust.If system works
Pressure, less it is also possible to not use central accumulator, is directly used oil pump as power source.
6th, when wheel runs into king-sized impact, damage to prevent oil cylinder internal pressure too high, fluid passes through first
Overflow valve and the second overflow valve flow out, and provide overload protection function, it is to avoid oil cylinder oil seal etc. damages under surge.
Brief description
Fig. 1 is the structural representation of one embodiment of the invention.
Wherein：1. oil cylinder, 2. power unit, 21. fuel tanks, 22. central accumulators, 23. reversal valves, 24. the 6th electromagnetic valves,
25. the 7th electromagnetic valves, 3. accumulator, 31. first accumulators, 32. second accumulators, 33. the 3rd accumulators, 34. barrier films, 4.
One valve group, 41. first check valves, 42. second check valves, 43. second electromagnetic valves, 44. the 3rd electromagnetic valves, 45. first through holes, 5.
Second valve group, 51. the 3rd check valves, 52. the 4th check valves, 53. the 4th electromagnetic valves, 54. the 5th electromagnetic valves, 55. second through holes,
6. the first electromagnetic valve, 7. the first overflow valve, 8. the second overflow valve.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing of the present invention, provide tool
The description of body embodiment, but not as any restriction to the present invention.
Referring to Fig. 1, a kind of vehicle suspension, including oil cylinder 1, power unit 2 and at least three accumulators 3；Described oil cylinder 1
First accumulator 31 described with one and described power unit 2 connect rod chamber respectively, the rodless cavity of described oil cylinder 1 respectively with its
Remaining described second accumulator 32 connects with described power unit 2.
Above-mentioned vehicle suspension adopts at least three accumulators 3, realize rigidity in real time, have level to adjust, improve vehicle anti-side and incline
Turn over performance with anti-side, greatly improve vehicle riding comfort, safety and control stability；The no bar of the oil cylinder 1 of existing suspension
Chamber connects an accumulator 3, and the rodless cavity of described oil cylinder 1 connected with the second accumulator 32 remaining described respectively, increase with
Total gas chamber volume of the accumulator 3 that the rodless cavity of oil cylinder 1 connects, thus reducing the rigidity of suspension so that suspension is softer, vehicle
Travel more steady, comfortable；The rodless cavity of oil cylinder 1 respectively with remaining the second accumulator 32, the no bar with oil cylinder 1 can be adjusted
The quantity of the accumulator 3 that chamber connects, thus changing total gas chamber volume of the accumulator 3 being connected with the rodless cavity of oil cylinder 1, is realized
The purpose of adjustment suspension rate.
One kind preferably embodiment, is provided with barrier film 34, the outer of described barrier film 34 and described energy storage in described accumulator 3
The inwall of device 3 connects, and described accumulator 3 is divided into upper energy storing space and lower energy storing space by described barrier film 34, and described lower energy storage is empty
Between connect with the rod chamber of described oil cylinder 1 or the rodless cavity of described oil cylinder 1, described lower energy storing space is used for storing liquid, described
Upper energy storing space is used for sealing gas.Specifically, upper energy storing space seals high pressure nitrogen, for adjusting suspension rate, provides
Prefabricating load；Lower energy storing space is used for storing fluid, and fluid adopts that the viscosity such as the good silicone oil of greasy property, aero oil are little, lubrication
Performance is good, fluid characteristic varies with temperature little fluid；Barrier film 34 is rubber membrane it is preferable that gas sealing ability is excellent, anti-ageing
Change, the flexible rubber film of life-span length, barrier film 34 can be fluctuated with the compression of gas in upper energy storing space.
One kind preferably embodiment, is provided with piston in described oil cylinder 1, and described oil cylinder 1 is divided into rod chamber by described piston
And rodless cavity, the rod chamber offer prefabricating load of oil cylinder 1, the rodless cavity of oil cylinder 1 bears car load and prefabricating load.
One kind preferably embodiment, the quantity of described accumulator 3 is three, and the respectively first accumulator 31, second stores up
Can device 32 and the 3rd accumulator 33；The rod chamber of described oil cylinder 1 pass through the first valve group 4 respectively with described first accumulator 31 and institute
State power unit 2 to connect；The rodless cavity of described oil cylinder 1 pass through the second valve group 5 respectively with described second accumulator 32, the described 3rd
Accumulator 33 connects with described power unit 2, and is provided with the first electromagnetism between described second valve group 5 and described 3rd accumulator 33
Valve 6.When vehicle is during travelling, adjust the number of the accumulator 3 being connected with the rodless cavity of oil cylinder 1 by the first electromagnetic valve 6
Amount, thus changing total gas chamber volume of the accumulator 3 being connected with the rodless cavity of oil cylinder 1, realization is real-time, there have level to adjust suspension to be firm
The purpose of degree is so that vehicle traveling is safer, comfortable, stable.
One kind preferably embodiment, described first valve group 4 includes the first check valve 41, second check valve the 42, second electricity
Magnet valve 43, the 3rd electromagnetic valve 44 and first through hole 45；The rod chamber of described oil cylinder 1 passes sequentially through described first check valve 41 and institute
State the second electromagnetic valve 43 to connect with described first accumulator 31, and described first through hole 45 and described second electromagnetic valve 43 parallel connection；
Described first accumulator 31 and described power unit 2 all pass sequentially through described 3rd electromagnetic valve 44 and described second check valve 42 with
The rod chamber connection of described oil cylinder 1.First valve group 4 is used for providing adaptive damping in suspension extension stage, increases suspension roll firm
Degree, prevents vehicle roll angle excessive.
Described second valve group 5 includes the 3rd check valve 51, the 4th check valve 52, the 4th electromagnetic valve 53, the 5th electromagnetic valve 54
With the second through hole 55；The rodless cavity of described oil cylinder 1 passes sequentially through described 3rd check valve 51 and described 4th electromagnetic valve 53 difference
Connect with described second accumulator 32 and described first electromagnetic valve 6, and described 4th electromagnetic valve 53, described 5th electromagnetic valve 54 and
Described second through hole 55 is in parallel, and described first electromagnetic valve 6 connects with described 3rd accumulator 33；Described second accumulator 32, institute
State the first electromagnetic valve 6 all to connect with the rodless cavity of described oil cylinder 1 by described 4th check valve 52 with described power unit 2.The
Two valve groups 5 are used for providing adaptive damping it is achieved that 3～4 grades of regulations of suspension damping in the suspension compresses stage, and damping ratio is from 0.15
Between～0.6, classification is adjusted.
In suspension compresses or extension, pass through the first valve group 4 respectively and the second valve group 5 provides Multi-stage damping power, formed big
Damping, in damping, medium and small damping, little damping greatly the damping of level Four basis, the damping of every one-level passes through suspension controller according to road surface
Situation Automatic adjusument damps size, rodless cavity valve group pass through will the 4th electromagnetic valve 53 and the 5th electromagnetic valve 54 in parallel, open the
Four electromagnetic valves 53 or the 5th electromagnetic valve 54 form a throttle orifice, compression damping reduction, the 4th electromagnetic valve 53 and the 5th electromagnetic valve
54 all open, and compression damping is minimum, and the 4th electromagnetic valve 53 and the 5th electromagnetic valve 54 are all closed, and compression damping is maximum；Compression travel
Rod chamber fluid passes through the first check valve 41 and the second check valve 42 and flows freely into, it is to avoid produce air pocket when suspension quickly moves
Phenomenon, reduces suspension property, it is to avoid cause pitting corrosion to oil cylinder 1.Normal vehicle operation automatically adjusts in level road, suspension
It is in medium and small damping, improve riding comfort it is also possible to need to be adjusted according to human pilot.
One kind preferably embodiment, power unit 2 includes fuel tank 21, central accumulator 22, reversal valve 23, the 6th electromagnetism
Valve 23 and the 7th electromagnetic valve 24, fuel tank 21 connects with central accumulator 22, and specifically, fuel tank 21 passes through oil pump and central energy storage
Device 22 connects；Central accumulator 22 is connected with reversal valve 23 by oil pump, and reversal valve 23 passes sequentially through the 6th electromagnetic valve the 24, the 3rd
Electromagnetic valve 44 is connected with the rod chamber of oil cylinder 1 with the second check valve 42, and it is unidirectional that reversal valve 23 passes through the 7th electromagnetic valve 25 and the 4th
Valve 52 is connected with the rodless cavity of oil cylinder 1, oil-filled to rod chamber and rodless cavity by controlling reversal valve 23 to replace, and reaches expectation pressure
Power.Wherein, reversal valve 23 adopts two position three way directional control valve 23, and the P hydraulic fluid port of reversal valve 23 connects with the oil-out of oil pump 23, commutation
The B hydraulic fluid port of valve 23 is connected with the oil-in of the 6th electromagnetic valve 24 and the oil-in of the 7th electromagnetic valve 25 respectively, the T oil of reversal valve 23
Mouth connects with the oil-in of fuel tank 21.Oil-in based on P hydraulic fluid port, B hydraulic fluid port is work oil return opening, oil return opening based on T hydraulic fluid port.Oil pump
23 is silent pump, reduces noise pollution, improves working environment；Motor is adjustable frequency motor it is ensured that output flow can
Needed according to system and change, more energy-conservation.
Above-mentioned power unit 2, can be quickly to the rod chamber of oil cylinder 1 and the rodless cavity of oil cylinder 1 using central accumulator 22
It is filled with hydraulic oil, energy consumption is greatly reduced；Using Algorithm of Active Control, under different driving cycles and car load, vehicle has
Optimal ride comfort and control stability, and by being filled with or discharging hydraulic oil to oil cylinder 1 rodless cavity, bodywork height can connect
Continuous regulation.If system working pressure, less it is also possible to not use central accumulator, is directly used oil pump as power source.
One kind preferably embodiment, also includes the first overflow valve 7 and the second overflow valve 8, and the rod chamber of described oil cylinder 1 leads to
Cross described first overflow valve 7 to connect with described fuel tank 21；The rodless cavity of described oil cylinder 1 passes through described second overflow valve 8 and described
Fuel tank 21 connects.
When wheel runs into king-sized impact, damage to prevent oil cylinder 1 internal pressure too high, fluid passes through first and overflows
Stream valve 7 and the second overflow valve 8 flow out, and provide overload protection function, it is to avoid oil cylinder 1 oil sealing etc. damages under surge.
Further, the first electromagnetic valve 6 and the second electromagnetic valve 43 are normally open solenoid valve；3rd electromagnetic valve the 44, the 4th electricity
Magnet valve 53 and the 5th electromagnetic valve 54 are high-speed switch valve；6th electromagnetic valve 24 and the 7th electromagnetic valve 25 are normally closed speed-sensitive switch
Valve.
A kind of vehicle, including above-mentioned suspension, described suspension is arranged on the bottom of vehicle body.
The operation principle of the present invention is as follows：
When the 1st, needing to continuously adjust suspension rate, by reversal valve 23 and connected 6th electromagnetic valve 24 and the 7th electricity
Magnet valve 25 is alternately filled with hydraulic oil to the rod chamber of oil cylinder 1 and the rodless cavity of oil cylinder 1, until it reaches the rigidity of setting；And vehicle body
Highly constant, need to reduce suspension rate, oil cylinder 1 upper and lower cavity section hydraulic oil replaces inflow fuel tank 21, the pressure drop of oil cylinder 1
Low, suspension rate is accordingly reduced to setting value；During car load change, suspension rate increases or decreases with car load and forms ratio
Example increase and decrease, therefore vehicle sprung mass natural frequency is basically unchanged under different loads, and vehicle has in fully loaded or unloaded situation
Unanimously good riding comfort, can also manually set regulation suspension rate simultaneously and change the intrinsic frequency of suspension sprung mass
Rate.Suspension rate can be set it is also possible to be automatically controlled according to driving cycle, load etc. by driver, suspension natural frequency because
This can continuously adjust, and meets given travel duty requirements, improves driving comfort.
2nd, when good road surface straight line at the uniform velocity travels, open the 4th electromagnetic valve 53 and the 5th electromagnetic valve 54, little damping be provided,
Vehicle riding comfort reaches optimum；
When rugged cross-country road travels, close the 4th electromagnetic valve 53 and the 5th electromagnetic valve 54, suspension is adjusted to damp greatly,
Ensure that body gesture is stablized and driving safety, improve vehicle anti-side and incline and performance of turning on one's side；
When encountering jump on raised impact wheel, the rodless cavity inner fluid of oil cylinder 1 flows to the second storage by the second through hole 55
Energy device 32 and the 3rd accumulator 33, and open the 4th electromagnetic valve 53 and the 5th electromagnetic valve 54, the partly oil in the rodless cavity of oil cylinder 1
Liquid passes through the 4th electromagnetic valve 53, the 5th electromagnetic valve 54 and the second through hole 55 and flows into the second accumulator 32 and the 3rd accumulator 33, hangs
Frame damping is adjusted to little damping, alleviates vehicle high-speed impact, and now the rod chamber volume of oil cylinder 1 increases, in the first accumulator 31
Fluid pass sequentially through the 3rd electromagnetic valve 44 and the first check valve 41 flows to the rod chamber of oil cylinder 1；
During wheel resilience, the fluid in the second accumulator 32 and the 3rd accumulator 33 flows back to oil cylinder 1 by the 4th individual event valve
Rodless cavity, and the fluid in the rod chamber of oil cylinder 1 flows to the first accumulator 31 through first through hole 45, and the first valve group 4 provides
Damping；Control algolithm is passed through in damping in first valve group 4 and the second valve group 5 can according to sensor informations such as vehicle body accelerations certainly
Adapt to adjust；
Vehicle turns to inclination under certain speed, and outboard wheels oil cylinder 1 is compressed, the rodless cavity of outboard wheels oil cylinder 1
Fluid flows to the second accumulator 32 and the 3rd accumulator 33, and the 4th electromagnetic valve 53 of outboard wheels suspension and the 5th electromagnetic valve 54 close
Close；Inboard wheel is upheld, and fluid flows to the rod chamber of inboard wheel oil cylinder 1 from the first accumulator 31 of inboard wheel oil cylinder 1, the
One valve group 4 and the second valve group 5 provide maximum damping, thus play anti-side inclining effect；
Vehicle stable state turns to for a long time, closes the first electromagnetic valve 6, the only second accumulator 32 works, thus improve outstanding
Frame rigidity；
During emergency turn, the second electromagnetic valve 43 cuts out, and by the rod chamber volume-lock of oil cylinder 1, suspension displacement is restricted,
Prevent vehicle roll angle excessive, improve vehicle anti-side and incline and performance of turning on one's side；
When vehicle emergency start or braking, oil cylinder 1 damping in front and back is adjusted to greatest level, plays anti-pitching effect；
In stationary vehicle or run at a low speed operating mode, oil pump 23 and central accumulator 22 pass through reversal valve 23 and the 7th electromagnetic valve
25 provide hydraulic oil so that bodywork height increases to the rodless cavity of oil cylinder 1；The rodless cavity fluid of oil cylinder 1 pass through reversal valve 23 from
Return line flows out, and bodywork height reduces, and bodywork height adjustment can manually or automatically be adjusted, according to the position of built-in suspension
Displacement sensor is determining suitable bodywork height；
When wheel runs into king-sized impact, damage to prevent oil cylinder 1 internal pressure too high, fluid passes through first
Overflow valve 7 and the second overflow valve 8 flow out, and provide overload protection function, it is to avoid oil cylinder 1 oil sealing etc. damages under surge.
The present invention is not limited to above-mentioned preferred forms, and those skilled in the art can draw under the enlightenment of the present invention
Other various forms of products, however, making any change in its shape or structure, every have same as the present application or phase
Approximate technical scheme, is within the scope of the present invention.
Claims (9)
1. a kind of vehicle suspension it is characterised in that：Including oil cylinder (1), power unit (2) and at least three accumulators (3)；Described
First accumulator (31) described with one and described power unit (2) connect the rod chamber of oil cylinder (1) respectively, described oil cylinder (1)
Rodless cavity connect with the second accumulator (32) remaining described and described power unit (2) respectively.
2. a kind of vehicle suspension according to claim 1 it is characterised in that：The quantity of described accumulator (3) is three, point
Wei not the first accumulator (31), the second accumulator (32) and the 3rd accumulator (33)；The rod chamber of described oil cylinder (1) passes through first
Valve group (4) is connected with described first accumulator (31) and described power unit (2) respectively；The rodless cavity of described oil cylinder (1) passes through
Second valve group (5) is connected with described second accumulator (32), described 3rd accumulator (33) and described power unit (2) respectively,
And it is provided with the first electromagnetic valve (6) between described second valve group (5) and described 3rd accumulator (33).
3. a kind of vehicle suspension according to claim 2 it is characterised in that：It is unidirectional that described first valve group (4) includes first
Valve (41), the second check valve (42), the second electromagnetic valve (43), the 3rd electromagnetic valve (44) and first through hole (45)；Described oil cylinder (1)
Rod chamber pass sequentially through described first check valve (41) and described second electromagnetic valve (43) with described first accumulator (31) even
Logical, and described first through hole (45) and described second electromagnetic valve (43) parallel connection；Described first accumulator (31) and described power list
First (2) are all passed sequentially through described 3rd electromagnetic valve (44) and described second check valve (42) and are connected with the rod chamber of described oil cylinder (1)
Logical.
4. a kind of vehicle suspension according to claim 3 it is characterised in that：It is unidirectional that described second valve group (5) includes the 3rd
Valve (51), the 4th check valve (52), the 4th electromagnetic valve (53), the 5th electromagnetic valve (54) and the second through hole (55)；Described oil cylinder (1)
Rodless cavity pass sequentially through described 3rd check valve (51) and described 4th electromagnetic valve (53) respectively with described second accumulator
(32) connect with described first electromagnetic valve (6), and described 4th electromagnetic valve (53), described 5th electromagnetic valve (54) and described second
Through hole (55) is in parallel, and described first electromagnetic valve (6) connects with described 3rd accumulator (33)；Described second accumulator (32), institute
State the first electromagnetic valve (6) and described power unit (2) all by the rodless cavity of described 4th check valve (52) and described oil cylinder (1)
Connection.
5. a kind of vehicle suspension according to claim 4 it is characterised in that：Described power unit (2) inclusion fuel tank (21),
Central accumulator (22), reversal valve (23), the 6th electromagnetic valve (24) and the 7th electromagnetic valve (25), described fuel tank (21) and described in
Centre accumulator (22) connection, described central authorities' accumulator (22) are connected with described reversal valve (23) by oil pump, described reversal valve
(23) described 6th electromagnetic valve (24), described 3rd electromagnetic valve (44) and described second check valve (42) and described oil are passed sequentially through
The rod chamber connection of cylinder (1), described reversal valve (23) pass through described 7th electromagnetic valve (25) and described 4th check valve (52) and
The rodless cavity connection of described oil cylinder (1).
6. a kind of vehicle suspension according to claim 5 it is characterised in that：Also include the first overflow valve (7) and second to overflow
Stream valve (8), the rod chamber of described oil cylinder (1) is connected with described fuel tank (21) by described first overflow valve (7)；Described oil cylinder
(1) rodless cavity is connected with described fuel tank (21) by described second overflow valve (8).
7. a kind of vehicle suspension according to claim 1 it is characterised in that：It is provided with barrier film (34) in described accumulator (3),
The outer of described barrier film (34) is connected with the inwall of described accumulator (3), and described accumulator (3) is divided into by described barrier film (34)
Energy storing space and lower energy storing space, the rodless cavity of the rod chamber of described lower energy storing space and described oil cylinder (1) or described oil cylinder (1)
Connection, described lower energy storing space is used for storing liquid, and described upper energy storing space is used for sealing gas.
8. a kind of vehicle suspension according to claim 7 it is characterised in that：Described barrier film (34) is rubber membrane.
9. a kind of vehicle it is characterised in that：Including the suspension described in any one in claim 1～8, described suspension is arranged on
The bottom of vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940130.2A CN106379131B (en) | 2016-10-25 | 2016-10-25 | A kind of vehicle suspension and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940130.2A CN106379131B (en) | 2016-10-25 | 2016-10-25 | A kind of vehicle suspension and vehicle |
Publications (2)
| Publication Number | Publication Date |
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| CN106379131A true CN106379131A (en) | 2017-02-08 |
| CN106379131B CN106379131B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610940130.2A Expired - Fee Related CN106379131B (en) | 2016-10-25 | 2016-10-25 | A kind of vehicle suspension and vehicle |
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| Country | Link |
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| CN (1) | CN106379131B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077192A (en) * | 2019-04-28 | 2019-08-02 | 燕山大学 | The adjustable half active Hydro-pneumatic Suspension system of rigidity and its regulation method |
| CN113423637A (en) * | 2019-01-29 | 2021-09-21 | 库德公司 | Hydropneumatic system for controlling the inclination of two wheels of a vehicle and vehicle equipped with said system |
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|---|---|---|---|---|
| US20060186728A1 (en) * | 2005-02-18 | 2006-08-24 | Toyota Jidosha Kabushiki Kaisha | Suspension apparatus |
| DE102010021777A1 (en) * | 2010-05-27 | 2011-01-05 | Daimler Ag | Arrangement for supporting axle at two vehicle sides or wheels of axle at vehicle bodywork, has hydraulic conveyer system hydraulically connected with compensation reservoir at suction-side and with work space at pressure-side |
| DE102012001532A1 (en) * | 2012-01-27 | 2013-08-01 | Daimler Ag | Shock absorber device for motor car, has hydraulic power supply arranged upstream to hydraulic actuator for providing auxiliary energy, and comprising flow that is hydraulically switched in parallel or parallely switchable with another flow |
-
2016
- 2016-10-25 CN CN201610940130.2A patent/CN106379131B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060186728A1 (en) * | 2005-02-18 | 2006-08-24 | Toyota Jidosha Kabushiki Kaisha | Suspension apparatus |
| DE102010021777A1 (en) * | 2010-05-27 | 2011-01-05 | Daimler Ag | Arrangement for supporting axle at two vehicle sides or wheels of axle at vehicle bodywork, has hydraulic conveyer system hydraulically connected with compensation reservoir at suction-side and with work space at pressure-side |
| DE102012001532A1 (en) * | 2012-01-27 | 2013-08-01 | Daimler Ag | Shock absorber device for motor car, has hydraulic power supply arranged upstream to hydraulic actuator for providing auxiliary energy, and comprising flow that is hydraulically switched in parallel or parallely switchable with another flow |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423637A (en) * | 2019-01-29 | 2021-09-21 | 库德公司 | Hydropneumatic system for controlling the inclination of two wheels of a vehicle and vehicle equipped with said system |
| CN113423637B (en) * | 2019-01-29 | 2023-10-17 | 库德公司 | Hydropneumatic system for controlling the tilting of two wheels of a vehicle and vehicle equipped with said system |
| CN110077192A (en) * | 2019-04-28 | 2019-08-02 | 燕山大学 | The adjustable half active Hydro-pneumatic Suspension system of rigidity and its regulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106379131B (en) | 2019-04-09 |
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